AD7922 Analog Devices, AD7922 Datasheet - Page 6

• Manufacturer Part Number: AD7922
• Description: 2-Channel, 2.35 V to 5.25 V, 1 MSPS, 12-Bit A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7922

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOP,SOT

AD7912/AD7922
Parameter
LOGIC OUTPUTS
CONVERSION RATE
POWER REQUIREMENTS
1
2
3
4
Operational from V
See the Terminology section.
Guaranteed by characterization.
See the Power vs. Throughput Rate section.
Output High Voltage, V
Output Low Voltage, V
Floating-State Leakage Current
Floating-State Output Capacitance
Output Coding
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
V
I
Power Dissipation
DD
DD
Normal Mode (Static)
Normal Mode (Operational)
Full Power-Down Mode (Static)
Full Power-Down Mode (Dynamic)
Normal Mode (Operational)
Full Power-Down
DD
= 2 V, with V
4
OL
OH
IH
= 1.9 V minimum and V
2
3
IL
A Grade
V
0.2
±0.3
5
888
290
1
2.35/5.25
3
1.5
4
2
1
0.5
0.28
20
6
5
3
= 0.1 V maximum.
DD
− 0.2
1
Straight (natural) binary
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Unit
V min
V max
µA max
pF max
ns max
ns max
MSPS max
V min/max
mA typ
mA typ
mA max
mA max
µA max
mA typ
mA typ
mW max
mW max
µW max
µW max
Test Conditions/Comments
I
I
16 SCLK cycles with SCLK at 18 MHz
See the Serial Interface section
Digital I/Ps = 0 V or V
V
V
V
V
SCLK on or off, typically 50 nA
V
V
V
V
V
V
SOURCE
SINK
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 4.75 V to 5.25 V, SCLK on or off
= 2.35 V to 3.6 V, SCLK on or off
= 4.75 V to 5.25 V, f
= 2.35 V to 3.6 V, f
= 5 V, f
= 3 V, f
= 5 V, f
= 3 V, f
= 5 V
= 3 V
= 200 µA
= 200 µA; V
SCLK
SCLK
SAMPLE
SAMPLE
= 18 MHz, f
= 18 MHz, f
= 1 MSPS
= 1 MSPS
DD
= 2.35 V to 5.25 V
DD
SAMPLE
SAMPLE
SAMPLE
SAMPLE
= 1 MSPS
= 1 MSPS
= 100 kSPS
= 100 kSPS